1. Chi-squared Test of Independence;Zibran,2007
2. Statistics in a nutshell;Boslaugh,2012
3. Chapter 7 - implementation of electronic resource management in libraries: a case study;Patra,2017
4. The chi-square test of independence;McHugh;Biochem Med,2013
5. Nonparametric statistics;Siegel;Am Statistician,1957